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Real-time earthquake alert system for the greater San Francisco Bay Area: a prototype design to address operational issues

Description: This paper describes a prototype for this EAS (real time) in the Bay area. Approach is pragmatic, attempting to establish a prototype system at a low cost and quickly. A real-time warning system can protect the public and mitigate earthquake damage. The proposed system is a distributed network of real-time strong-motion monitoring stations that telemetered data in real time to a central analysis facility which could transmit earthquake parameter information to an area before elastic wave energy… more
Date: May 29, 1996
Creator: Harben, P.E.; Jarpe, S. & Hunter, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Real-time earthquake alert system for the greater San Francisco Bay Area: a prototype design to address operational issues

Description: The purpose of the earthquake alert system (EAS) is to outrun the seismic energy released in a large earthquake using a geographically distributed network of strong motion sensors that telemeter data to a rapid CPU-processing station, which then issues an area-wide warning to a region before strong motion will occur. The warning times involved are short, from 0 to 30 seconds or so; consequently, most responses must be automated. The San Francisco Bay Area is particularly well suited for an EAS … more
Date: December 10, 1996
Creator: Harben, P.E.; Jarpe, S. & Hunter, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Regional location in western China

Description: Accurately locating seismic events in western China using only regional seismic stations is a challenge. Not only is the number of seismic stations available for locating events small, but most stations available to researchers are often over 10{degree} distant. Here the authors describe the relocation, using regional stations, of both nuclear and earthquake sources near the Lop Nor test site in western China. For such relocations, they used the Earthquake Data Reports provided by the US Geolog… more
Date: October 1, 1996
Creator: Cogbill, A.H. & Steck, L.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Regional seismic discrimination in central Asia with emphasis on western China

Description: In support of an anticipated Comprehensive Test Ban Treaty, the authors have started to evaluate regional seismic event discrimination capabilities for central Asia, emphasizing western China. The authors have measured noise and seismic phase amplitudes of over 250 earthquakes and 18 underground nuclear explosions recorded at the broadband, digital station WMQ in western China and over 100 earthquakes and 5 nuclear explosions at station AAK in Kyrgyzstan. The explosions are from the Kazakh Test… more
Date: September 1, 1996
Creator: Hartse, H. E.; Taylor, S. R.; Phillips, W. S. & Randall, G. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Site-specific probabilistic seismic hazard analyses for the Idaho National Engineering Laboratory. Volume 1: Final report

Description: This report describes and summarizes a probabilistic evaluation of ground motions for the Idaho National Engineering Laboratory (INEL). The purpose of this evaluation is to provide a basis for updating the seismic design criteria for the INEL. In this study, site-specific seismic hazard curves were developed for seven facility sites as prescribed by DOE Standards 1022-93 and 1023-96. These sites include the: Advanced Test Reactor (ATR); Argonne National Laboratory West (ANL); Idaho Chemical Pro… more
Date: May 1, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Site-specific probabilistic seismic hazard analyses for the Idaho National Engineering Laboratory. Volume 2: Appendices

Description: The identification of seismic sources is often based on a combination of geologic and tectonic considerations and patterns of observed seismicity; hence, a historical earthquake catalogue is important. A historical catalogue of earthquakes of approximate magnitude (M) 2.5 and greater for the time period 1850 through 1992 was compiled for the INEL region. The primary data source used was the Decade of North American Geology (DNAG) catalogue for the time period from about 1800 through 1985 (Engda… more
Date: May 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Statistical classification methods applied to seismic discrimination

Description: To verify compliance with a Comprehensive Test Ban Treaty (CTBT), low energy seismic activity must be detected and discriminated. Monitoring small-scale activity will require regional (within {approx}2000 km) monitoring capabilities. This report provides background information on various statistical classification methods and discusses the relevance of each method in the CTBT seismic discrimination setting. Criteria for classification method selection are explained and examples are given to ill… more
Date: June 11, 1996
Creator: Ryan, F. M.; Anderson, D. N.; Anderson, K. K.; Hagedorn, D. N.; Higbee, K. T.; Miller, N. E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structural evaluation for the core sampling trucks, RMCS operations, 200 Area

Description: This report evaluates the structural adequacy and the integrity of the existing core sampling trucks to withstand impact should the trucks drop off the ramp, either onto the soft ground or onto a non-yielding surface due to operational error, wind, or earthquake. The report also addresses if the allowable tank dome load will be exceeded by the addition of the impact load.
Date: March 12, 1996
Creator: Islam, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of geotechnical services for the proposed Route 24/580/980 interchange improvement in Oakland, California

Description: This report presents a summary of the geotechnical services in connection with the proposed Route 24/580/980 Interchange Improvement in Oakland, California. The purpose of the work was to provide drilling equipment and personnel to log test borings, collect soils samples, testing of excess soil cutting for environmental concerns and disposal of excess soils cutting. A field investigation was conducted from September 7 through September 26, 1995. The field work consisted of drilling 7 borings (B… more
Date: February 1, 1996
Creator: Tabatabaie, A. & Majchrzak, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of the technical report on estimating the impact of key programmatic risk allocation decisions on Phase 1 bids and U.S. Department of Energy costs

Description: The US Department of Energy (DOE) is privatizing the processing of hazardous and radioactive tank waste at the Hanford Site in Washington State. As part of the privatization process, a request for proposals describing the conditions and DOE`s expectations for contractor performance and responsibilities was issued. Argonne National Laboratory and Pacific Northwest National Laboratory collaborated to analyze programmatic risks and costs associated with privatization. They examined nine major risk… more
Date: May 1, 1996
Creator: Keisler, J.M. & Buehring, W.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthetic seismograms at regional distances for May 1995 earthquake and explosion sources in Western China

Description: Waveforms recorded at several regional seismic stations at varying azimuths form explosion and earthquake sources in western China exhibit marked variation from station to station. We have performed two-dimensional finite difference simulations of these events, using moment tensor sources and simple crustal structure models, to generate synthetic seismograms at these locations. The synthetic seismograms at three locations exhibit behavior that is qualitatively consistent with the data, while co… more
Date: August 1, 1996
Creator: App, F. N.; Bos, R. J. & Kamm, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Synthetic strong ground motions for engineering design utilizing empirical Green`s functions

Description: We present a methodology for developing realistic synthetic strong ground motions for specific sites from specific earthquakes. We analyzed the possible ground motion resulting from a M = 7.25 earthquake that ruptures 82 km of the Hayward fault for a site 1.4 km from the fault in the eastern San Francisco Bay area. We developed a suite of 100 rupture scenarios for the Hayward fault earthquake and computed the corresponding strong ground motion time histories. We synthesized strong ground motion… more
Date: April 11, 1996
Creator: Hutchings, L. J.; Jarpe, S. P.; Kasameyer, P. W. & Foxall, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

WHC natural phenomena hazards mitigation implementation plan

Description: Natural phenomena hazards (NPH) are unexpected acts of nature which pose a threat or danger to workers, the public or to the environment. Earthquakes, extreme winds (hurricane and tornado),snow, flooding, volcanic ashfall, and lightning strike are examples of NPH at Hanford. It is the policy of U.S. Department of Energy (DOE) to design, construct and operate DOE facilitiesso that workers, the public and the environment are protected from NPH and other hazards. During 1993 DOE, Richland Operatio… more
Date: September 11, 1996
Creator: Conrads, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Winnetka deformation zone: Surface expression of coactive slip on a blind fault during the Northridge earthquake sequence, California. Evidence that coactive faulting occurred in the Canoga Park, Winnetka, and Northridge areas during the 17 January 1994, Northridge, California earthquake

Description: Measurements of normalized length changes of streets over an area of 9 km{sup 2} in San Fernando Valley of Los Angeles, California, define a distinctive strain pattern that may well reflect blind faulting during the 1994 Northridge earthquake. Strain magnitudes are about 3 {times} 10{sup {minus}4}, locally 10{sup {minus}3}. They define a deformation zone trending diagonally from near Canoga Park in the southwest, through Winnetka, to near Northridge in the northeast. The deformation zone is abo… more
Date: December 31, 1996
Creator: Cruikshank, K. M.; Johnson, A. M.; Fleming, R. W. & Jones, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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